Ky is a distinctive boys' name in United States, ranking #4950 in 2010 with 19 recorded births. The name reached its all-time peak in 2017 with 40 births ranking #2982. Since 1996, the popularity has decreased by 32.1%. In 2010, approximately 1 in every 100,969 boys born was named Ky. FALLING Recent data shows the name is currently falling.